nadir

na·dir
/ ˈnādər; ˈnādi(ə)r/
•
n. [in sing.]
the lowest point in the fortunes of a person or organization:
they had reached the nadir of their sufferings. ∎ Astron.
the point on the celestial sphere directly below an observer. The opposite of zenith.

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nadir

nadir the point on the celestial sphere directly below an observer; in general use, the lowest point in the fortunes of a person or organization. Recorded from late Middle English (in the astronomical sense) the word comes via French from Arabic naẓīr (as-samt) ‘opposite (to the zenith)’.

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nadir

nadir (astron.) †point in the heavens diametrically opposite to another XIV; point opposite to the zenith XV; lowest point XVIII. — (O)F. — Arab. naz̳īr opposite. In the second sense for naz̳īr as-samt opposite to the ZENITH.

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